>> look, you have three presidents, president clinton, bush and obama said that nuclear iran is unacceptable. if the iranians are allowed to walk across that threshold with no opposition, that would demonstrat demonstrates other would-be regimes that-- >> is this the year for the showdown on iran? >> simply as a matter of industrial mechanics, how much uranium you need to enrich to get to a bomb this is the year. >> paul: we've been saying that for a while and somehow there's a computer virus that happens that keeps kicking it down. but it's not an ever receding horizon and the international atomic energy looks at iran as nuclear some piles, how much they have and how deeply -- look, you saw benjamin netanyahu at the u.n. in september draw literally a red line and they've come to consensus grew late in the spring of 2013 you're going to have that threshold. >> paul: matt, you've been the optimist in our group on the arab spring and made a strong case for it particularly after the dictatorships for so many decades in that part of the world. give us some reason to think that this could turn ou